LTWOO GR9 Gravel CX Bike 1x11S Mechanical Groupset with ZRACE Cassette Crankset Chain BB Cable Pull Disc Brake Kit 48T 50T Optio

GR9 Gravel 1x11 Speed Full Set
Mechanical Shift Cable Pull Brake

Package Components

LTWOO GR9 Right Shifter ×1
(Shifting cable included)
LTWOO GR9 Left Shifter ×1
LTWOO GR9 Rear Derailleur ×1

ZRACE RX Road Gravel Crankset ×1
ZRACE DUB Bottom Bracket ×1
ZRACE 11-Speed Chain ×1
ZRACE 11-Speed Cassette ×1

Crankset Options (Length):
170mm / 172.5mm / 175mm

Crankset Options (Chainring):
38T / 40T / 42T / 44T

Bottom Bracket Options:
BSA / BB30 / PF30 / BB86 / BB92

Cassette Options: 11-46T / 11-50T

Shift Lever (Right)

Material: Aluminum alloy brake lever.
Operation: Dual Shifting Paddles

Shifting Cables: Pre-Installed Cable
1x19 High-Strength Stainless
Precision Die-Cast Head

Weight: 254g

Shift Lever (Left)

Material: Aluminum alloy brake lever.
Operation: Brake Lever Only

Weight: 186g

Rear Derailleur

Speed: 11-Speed

Compatible Sprocket:
Minimum 10-11T / Maximum 50T

Pulley Wheels:
Dual Narrow-Wide Teeth (Upper & Lower)

Cage Material:
High-Strength Aluminum Alloy (Inner & Outer)

Main Structure:
Double Spring Design

Weight: 289g

Crankset

Model: ZRACE RX Road / Gravel Chainset.

Material: Forged 6061 aluminum alloy, full CNC machined.

Spindle: DUB 29mm steel spindle.

Crank Arm Design:
Hollow aluminum, 3-bolt interface system.

Length Options:
170mm / 172.5mm / 175mm.

Q-Factor: 148mm.

Weight: ≈540g

Chainring

CNC machined aluminum, BCD 110mm, narrow-wide tooth profile.

Chainring Options:
38T / 40T / 42T / 44T

Weight：
52g / 62g / 72g / 74g

Compatibility:
Works with all 10, 11, and 12-speed chains.

Spider

BCD 110 3-Bolt Narrow-Wide Tooth
CNC Machined Aluminum

Weight：44g

Casette

Speed: 11-speed.
Material: High-strength steel.
Compatibility: Fits HG freehub standard.

Options & Weight:
11-46T (approx 535g)
11-50T (approx 590g)

Chain

Speed: 11-speed (compatible with SHIMANO, SRAM, LTWOO).

Links: 120L.

Material: High-strength alloy steel (Nickel-plated anti-rust).

Connector: Includes reusable Quick-Link / Master-Link.

DUB 29mm Bottom Bracket

Compatibility: Fits DUB 29mm spindle cranksets (ZRACE RX).

Bearings: Sealed steel bearings (smooth, waterproof, dust-proof).

BSA: Threaded | Width: 68-73mm | Inner Dia: 34.8mm

PF30: Press-Fit | Width: 68-73mm | Inner Dia: 46mm

BB30: Press-Fit | Width: 68-73mm | Inner Dia: 42mm

BB86 92: Press-Fit | Width: 86.5-92mm | Inner Dia: 41mm